I have been dragging the motor brake to simulate a load. (Releasing the brake at about 20 HZ). The drive accel time is set at 1.5 sec. Run frequency is set at 60 HZ. The motor appears to reverse direction about the time the brake releases. When I run the drive and release the brake off of the...
I have an Allen Bradley 15 H.P. 1336 VFD that I suspect has an intermittent single-phase fault on the output. This drive is on a vertical lift conveyor system. There are times when the drive will start to lift the conveyor (frequency indicating + on the HIM) then the motor reverses direction...
